Stop motion for spinning machines



N. L. LAWTON.

STOP MOTION FOR SPINNING MACHINES.

APPLICATION FILED APR 26, I92].

9w 2 4 9 l 1 n gm y a S M m m s i BM U H I. a... I w, %W w ,k 5 I 0 7 M7 2 I I m I ..M....... u l M w w 8 m 8 w M 5 11 1 A1 T a,

WITNESSES N. L. LAWTON.

STOP MOTION FOR SPINNING MACHINES.

APPLICATION FILED APR- 26, I921.

Patented May 2, 1922,

3 SHEETSSHEET Z- Tia.

l/Vl/E/VTOR NATHAN L.LAwT0/v WITNESSES By W 7' e;

Arm/mus L. LAWTON STOP MOTION FOR SPINNING MACHINES.

APPLICATION FILED APILZB, I921.

Patented May 2, 1922.

3 SHEETS-SHEEI SI NA THAN LLAwro By v.

WW4 I "WITNESSES ATTORNEYS NATHAN L. LAVVTON, OF DOVER, NEW JERSEY.

STOP MOTION FOR SPINNING MACHINES.

T 0 all whom it may concern:

Be it known that I, NATHAN L. LAWTON, a citizen of the United States, and a resident of Dover, in the county of Morris and State of New Jersey, have invented a new and Improved Stop Motion for Spinning Machines, of which the following is a" full, clear, and exact description.

The invention relates to textile spinning and its object is to provide a new and improved stop motion for spinning machines arranged to automatically stop the winding up spool from running in case the yarn breaks.

Another object is to relieve the. driving belt for the spindles of undue wear incident to moving the belt out of engagement with the spindle, as heretofore practiced.

Another object is to stop the rotation of the unwinding spools in case the yarn breaks to prevent tangling of the loose ends of a broken yarnv with-the yarns of the adjacent spools.

With these and other objects in View, the

invention consists of certain novel features of construction as hereinafter shown and described and then specifically pointed out in the claims.

A practical embodiment of the invention is represented in the accompanying drawingsforming-a part-of this specification, in whichsimilar characters of reference indicate corresponding parts in all the views.

Figure 1 is a cross section of a spinning machine provided with the improved stop motion;

Figure 2 is a front view of the stopping device for the unwinding spools;

Figure 3 is an enlarged front elevation of the stop motion as applied;

v Figure 4 is an enlarged sectional front elevation of the same-on the line 4 4.- of Figure 5, parts being shown in elevation;

Figure 5 is a sectional plan view of the same on the line 5-5 of Figure 3 and with the parts in running position; and

Figure 6 is a similar view of the uSfiLl'I'lG with the parts in stop position.

The spinning machine is mounted on a suitably constructed main frame 10 on the upper portion of which are arranged the usual racks 11 disposed on opposite sides of the frame and each carrying pins 12 supporting sets of spools 13, and from each set of spools unwind a corresponding number I of yarns 14 passing downward through eyes 49 forming part of the base 31.

I Specification of Letters Patent. Patgntedl May 2, 11922, Application filed April 26, 1921. Serial No. 464,544

finally wind in spun condition on the wind ing up spool 19. Each spool 19 is removably mounted on the upper end of a spindle 25 normally in driving contact with an endless driven, belt 26 to rotate the spindles on both sides of the machine at the same time and in unison. The construction so far described is that of an ordinary silk spinning machine as now generally used and hence further. detail description of the general arrangement is not deemed necessary. Each s indle 25 is mounted on a supporting pin 2 provided with a flange 28 from which depends a rim 30 resting on a base 31 having a depending hub 32 extending through an opening 33 formed in the table 34 formingpart of the main frame 10. A nut 35 screws on the hub 32 to securely and adjustably hold the base 31 in position on the table 34. From the flange 28 depends centrally a pin 36 extending eccentrically through the hub 32 and carrying at its lower end a nut 37 on which rests a spring 38 coiled on the pin 36 and abutting with its upper end against the under side of the base 31 to hold the rim 30 wit-h the desired friction in engagement with the base 31. By extending the pin 36 eecentrically through the hub 32 the spindle 25 can be adjusted relative to the belt. The rim 30 is pivotally connected by a pivot pin 40- with the base 31 and this pivot pin 40 is parallel to the axis of the spindle 25 to allow of swinging the spindle 25 bodily into or out of engagement with the belt 26. Normallythe spindle 25 is in driving engagement with I the belt 26 by the actionof a spring 15 at tached at one end to a book 46 secured to a lug 47 formed on the flange 28 of the rim 30, and the other end of the spring 45 is attached to a book 48 projecting from a lug The lug 49 is provided with a tooth 5O projecting into a slot 51 formed in the flange-29 of the rim 30 to limit the bodily swinging movement of the rim 30 and consequently that of the spindle 25 carried thereby.

The lug 47. previously mentioned is engaged by the shank 55 of a hook 56, and on the said shank screws a nut 57 abutting against the lug 47. The hook 56 is connected with one end of a chain or other flexible connection 58 attached at its other end to a screw or similar device 59 fastened on the peripheral face of a hub 60 forming part of a swing arm 61. The hub 60 of the swing arm 61 is mounted to turn on a stud with the belt 26. Now in case the rod 67 is moved upward and with it the cam 64 then the latter by the action of its cam groove 63 and the pin 62 imparts a swingmg motion to the swing arm 61 to cause the flexible connection 58 and its hook 56 to impart a swinging movement to the rim and the spindle support 27 to move the spindle 25 out ,of engagement with the drivin belt 26, thus stopping the spindle 25.

The rod 67 is provided with an arm 70 attached to the lower end of a rod 71 mounted to slide up and down in bearings arranged on the mainv frame. 10, and the said rod 71 is pressed in an upward direction by a spring coiled on the rod and resting at its lower end on top of the table 34: and abutting at its upper end against a collar 73 fastened by a set screw 74 to the rod 71. The spring 72 is normally under tension and the rod 71 is held in lowermost position by a hook 8O engaging a collar 81 attached to the rod 71. The hook 80 forms part of a tripping mechanism 82 of which the eye 15 forms a part, but as this tripping mechanism is of usual construction further description of the same is not deemed neces- ,sa-ry,it being sutlicient to state that in case a yarn 14: breaksthe tripping mechanism 82 is actuated and its hook 80 is moved out of engagement-with the collar 81 thus allowing the spring 72 to move the rod 71 upward. When this takes place the arm 70' r0 67 and with it the rod 71 downwardafter the broken yarn has been repaired and it is desired to re-engage the spindle 25 with the belt 26.

From .the foregoing it will be seen that normally the spindle 25 is in frictional contact with'the driving belt 26 to rotate the spindle 275 and with it the spool'19 on which winds the yarn 1% after leaving the traveler 18. In case a yarn breaks inter-- mediate the traveler 18 and the spool 13 intense outward thus moving the spindle 25 onto]? engagement with the belt 26, as plainly shown in Figure 6. It is understood that in machines of this type it has been customary to move the belt 26 out of engagement with the spindle 25 by theuse of an idler,

but such arrangement produced undesirable wear on the belt and the idler. A brake 90 is attached to the swing arm 61 and is adapted to engage the spindle 25 at the time the latter swings out of engagement with the belt 26, as will be readily understood by reference to Figures 5 and 6.

Tn order to immediately stop the unwinding spools'13 from rotating after a yarn 14: breaks use is made of brake arms 100 attached to the rod 71 and normally extending in close proximity to the peripheral faces of the rear flanges 101 of the spools 13, as plainly shown in Figure 1. The brake arms 100 are adjustably secured by set screws 102 on the rod 71 and hence when the latter moves into uppermost position after being the peripheral faces of the spools 13 to brake the same and thus stop the rotation incident to the pull exerted by the feed rolls 16 and 17 on the slot 14. It will be noticed that by this arrangement the broken end of a yarn dangling from a spool 13 is not liable to become entangled with an adjacent spool to the right or to the left of the spool having the broken yarn.

Havin thus described my invention, T claim as new and desire to secure by Letters Patent: p 1. In a spinning machine, a driven belt, a spindle,-a spindle support having a pivot parallel tothe axis of the spindle'to allow the spindle into and out of engagement with the said belt, aspring pressing the said spindle support to hold the spindle in con tact with the said'belt, a member mounted to turn on an axis parallel to the axis of the the spindle support to swing bodily tomove spindle, a 'connection'connecting the said member with the said spindle support, a-

cam controlling the said member, and means controlled by the yarn to be wound on a spool held on the spindle and controlling the said camto move the spindle out of engagement with the said belt on the breaking of the yarn. I

2. In a spinning machine, a driven belt, a

neraaes a pivot spindle, a spindle support havingl v 1 e to a parallel to the axis of the spin 'low the spindle support to swing bodily to move the spindle into and out of engagement with the said belt, a spring pressing the said spindle support to hold the spindlev in contact with the said belt, an arm having-a hub mounted to turn on an axis parallel to the axis of the spindle, a

flexible connection cdnneeting the said hub with the said spindle, acam engaging the said arm, a sprlng pressed rod mounted to' slide and carrying the said cam, and a holding and releasing device for the said rod and controlled by the yarn to be wound on a spool held on the said spindle.

3. In a spinning machine a driven belt, a spindle, a spindle support having a pivot parallel to the axis of the spindle to allow the spindle support to swing bodily to move the spindle into and out of engagement with the saidbelt, a spring pressing the said spin dle support to hold the spindle in. contact with the said belt, a member mounted to turn on an axis. parallel to the axis of the spindle, a connection connecting the said member with the said spindle support, a cam controlling, the said member, me'ans controlled by the yarn to be wound on a spool held on the spindle and controlling the said cam to move the spindle out of engagement with the saidbelt on the breaking of the yarn, and limiting means to limit the bodily swinging movement of the arm to the spindle support.

e k/In aspinning machine, an unwinding spool, a spring-pressed rod having a fixed arm adapted to engage the said spool, and a holding and releasing device controlled by the yarn unwinding from the said spool and p engaging the said rod to hold the latter norport having a rim, a base on which the said rim is mounted to turn,-and a pivot pin parallel to the axis of the spindle and connecting the rim with the base to allow the spindle support to swing on the'said pivot.

6. In a spinning machine, a spindle support adapted to carry a spindle for a spool for winding up the yarn, the spindle support having a rim, abase on which the said *spindle rim is mounted to turn, a pivot pin parallel to the axis of the spindle and connecting the rim with the base to allow the spindle support to swing on the said pivot, and a spring interposed between the base and the spindle support'to hold the rim in engagement with the base.

7.'lln a spinning machine, a spindle sup-, port adapted to carry a spindle for a spool for winding up the yarn,vthe,spindle support having a rim, a base on which the said rim is mounted to turn, and a pivot pin par-- allelto the axisof the spindle and connect ing the rim with thebase to allow the spindle supportto swing'on the said-pivot, the said rim having a notch and the said base having a lug projecting into the said notch to limit the bodily swingingmovement of the saidspindle support. I,

a NATHAN L. LAWTQN. 

